**The referenced DOE-EIA publication can currently be found at www.eia.doe.gov. On the home page select "Petroleum;" under "Prices" select "Weekly Retail Gasoline and Diesel Prices;" for the "Area" select "U.S.;" for the "Period" select "Monthly;" then refer to the data on the line entitled "Diesel (On-Highway)." Monthly data is normally published Wednesday after the last Monday of a given month.